This
information
on
the
two
major
types
of
plate
interaction
and
the
resulting
features
discusses
the
Mid
Atlantic
Ridge
and
the
mid-ocean
ridges
in
connection
with
divergence
and
ocean
trenches
and
connects
the
Pacific
Ring
of
Fire
to
the
concept
of
subduction.
Volcanic
activity
as
a
result
of
subduction
is
also
covered.
The
site
also
features
links
to
goals,
objectives,
and
materials
for
a
hands-on
...
Full description.

Follow
ocean
explorations
in
near
real-time,
learn
about
ocean
exploration
technologies,
observe
remote
marine
flora
and
fauna
in
the
multimedia
gallery,
review
NOAA's
200-year
history
of
ocean
exploration,
and
discover
additional
NOAA
resources
in
a
virtual
library.
View
current
expeditions
or
take
a
look
back
at
the
archived
ones.
Most
expeditions
feature
fact
sheets,
photographs,
explorer
logs,
...
Full description.

This portal provides links to an extensive list of volcano-related websites for the United States and around the world. Users can access articles, maps, glossaries, webcams, a dictionary of volcanoes, and many other resources.
Full description.

In
this
Web-based,
interactive
story,
Tutangiaq
(Too-tang-geye-ack
-
nicknamed
2T),
a
Canada
Goose,
flies
across
Alaska
looking
for
his
family.
As
he
flies,
he
tells
students
about
the
49th
state.
Students
learn
several
facts
about
the
state,
including
how
Alaska
was
purchased
from
the
Russians,.
They
can
also
compare
the
size
of
Alaska
to
other
states.
2T
takes
a
flight
across
the
volcanic
chain
...
Full description.

This site presents a summary of current volcanic eruptions and images and videos of volcanoes on Earth. Discussions of the characteristics of volcanism on other worlds in our solar system are also presented and are accompanied by maps and imagery. Links to volcano observatories, parks, and monuments around the world are also included.
Full description.

Grade level:
Intermediate (3-5), Middle (6-8), High (9-12), General public

This
Why
Files
feature
posted
November
6,
1997
explains
some
of
the
tools
employed
by
the
climatologist,
and
how
they
are
used
to
measure
climate
or
look
back
in
time
to
see
what
climate
was
like
long
ago.
How
do
scientists
forecast
what
might
be
in
store
for
the
planet?
Topics
include
how
scientists
take
the
Earth's
temperature
and
use
computer-based
climate
models,
ice
cores
from
remote
glaciers
...
Full description.

Grade level:
Intermediate (3-5), Middle (6-8), High (9-12), General public

This
National
Oceanic
and
Atmospheric
Administration
(NOAA)
site
presents
video
animations
and
maps
of
exploration
routes,
bathymetry,
undersea
tracks
of
submersibles,
satellite
imagery,
aerial
photography.
The
section
of
animated
images
includes
a
three-dimentional
flythrough
created
by
using
bathymetric
data,
video
animations
of
a
mid-ocean
spreading
center,
an
animation
of
the
subduction
zone,
...
Full description.

Grade level:
College (13-14), College (15-16), Graduate / Professional

This site is the archive for the NASA (National Aeronautic Space Administration) Astronomy Picture of the Day. Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. The archive has photos listed by the day they were featured, by topic, or available through a text search.
Full description.

This
set
of
lecture
notes
discusses
the
occurrence
and
tectonic
settings
of
igneous
rocks
near
convergent
plate
margins.
A
discussion
of
petrography
includes
major
element
composition,
calc-alkaline
trends
in
ternary
diagrams,
trace
element
variations,
isotopes
to
distinguish
magma
sources,
and
the
origin
of
igneous
rocks
at
convergent
margins.
The
lecture
notes
include
helpful
illustrations,
maps
...
Full description.